Sorry if I originally posted in the wrong forum (adult cases section). I probably posted more than I needed there. But I was just wondering if Polysomnogram's are really necessary when determining if I need a biobloc or how to go about the treatment because my orthodontist still insists that I go through with it even though we already did a cast, ceph x-ray, panoramic, and photos which he found already points to me needing one because he's already asking if I'm ready to go through with the treatment and to let him know, so he can send my cast off to the lab to get a customized device. So I'm thinking why is it necessary to go through the trouble of a PSG and spending more for nothing? What do you guys/gals think?